--- product_id: 82288591 title: "Nashua FoilMastic Butyl Rubber Sealant Tape, 3 in. (72mm Actual) x 100 ft. (Silver)" brand: "nashua" price: "523.39 DT" currency: TND in_stock: true category: "Nashua" url: https://www.desertcart.tn/products/82288591-nashua-foilmastic-butyl-rubber-sealant-tape-3-in-72mm-actual store_origin: TN region: Tunisia --- # 3 in x 100 ft - versatile length & width UL 181B-FX listed - flame & smoke resistant 15 mil butyl adhesive - instant airtight seal Nashua FoilMastic Butyl Rubber Sealant Tape, 3 in. (72mm Actual) x 100 ft. (Silver) **Brand:** nashua **Price:** 523.39 DT **Availability:** ✅ In Stock ## Summary > 🛡️ Seal smarter, not harder — the pro’s choice for airtight confidence! ## Quick Answers - **What is this?** Nashua FoilMastic Butyl Rubber Sealant Tape, 3 in. (72mm Actual) x 100 ft. (Silver) by nashua - **How much does it cost?** 523.39 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/82288591-nashua-foilmastic-butyl-rubber-sealant-tape-3-in-72mm-actual) ## Best For - nashua enthusiasts ## Why This Product - Trusted nashua brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seal Like a Pro:** Aggressive butyl mastic adhesive ensures instant, water- and air-tight sealing for HVAC and metal repairs. - • **Conforms Anywhere:** Dead-soft 2 mil aluminum foil backing molds effortlessly around curves, corners, and odd shapes. - • **Built for Pressure:** Certified to SMACNA pressure classes up to 10-inch w.g., handling low to high-pressure HVAC systems with ease. - • **Code-Ready & Green:** UL 181B-FX listed and low VOC content supports LEED credits for energy performance and low emissions. - • **Durability That Lasts:** Resistant to moisture, solvents, flame spread, smoke, and high temperatures up to 200°F for reliable long-term use. ## Overview Nashua FoilMastic Butyl Rubber Sealant Tape is a 3-inch by 100-foot UL 181B-FX listed aluminum foil tape coated with 15 mils of aggressive butyl rubber adhesive. Designed for indoor and outdoor HVAC sealing and metal repairs, it delivers instant airtight and waterproof seals, conforms easily to complex shapes, and meets rigorous SMACNA pressure and seal class standards. With excellent resistance to moisture, solvents, flame, smoke, and temperatures up to 200°F, it’s a durable, code-compliant solution favored by professionals. ## Description Nashua 367-17 FoilMastic Butyl Rubber Sealant Tape is a UL 181B-FX listed foil sealing tape that pairs a 2 mil dead-soft printed aluminum foil backing with a thick 15 mil layer of butyl rubber mastic adhesive. It seals joints, seams and connections on low, medium and high pressure HVAC systems, including sheet metal ductwork and flexible duct systems, indoors and outdoors. It is also used to seal cracks and seams in gutters, sheet metal roofing and trailers.Features and Benefits• Aggressive butyl mastic adhesive creates an instant water-tight and air-tight seal- Resists moisture and solvents- Performs to SMACNA 0.5 up to 10 inch w.g. pressure classes and seal classes A, B and C, verified by the SMACNA Testing and Research Institute- Conformable foil backing fits tight spaces and round, square or odd-shaped objects- UL 181B-FX Listed; can contribute toward LEED EA Credit 1- Low VOC content can contribute toward LEED EQ Credit 4.1Specifications• Standards: UL 181B-FX Listed; pressure classes by SMACNA Testing and Research Institute- Backing: 2 mil printed aluminum foil- Adhesive: butyl rubber- Liner: blue LDPE film- Total thickness: 17 mils (15 mil adhesive, 2 mil foil)- Adhesion to steel: 90 oz/in- Adhesion to backing: 40 oz/in- Tensile strength: 23 lb/in- Service temperature: 40 to 200 degrees F- Flame spread index: under 25 (UL 723)- Smoke developed index: under 50 (UL 723)- VOC content: under 1 g/L- Core: 3 inch- Shelf life: 36 months from manufacture Country of Origin: United States. ## Features - UL 181B-FX LISTED FOIL SEALING TAPE: Dead-soft printed aluminum foil backing coated with a thick layer of butyl rubber mastic adhesive for sealing joints, seams and connections on HVAC duct systems. The UL 181B-FX listing meets code requirements for flexible duct closure systems. - AGGRESSIVE BUTYL MASTIC ADHESIVE: The 15 mil butyl rubber adhesive layer creates an instant water-tight and air-tight seal and resists moisture and solvents. Low VOC content (under 1 g/L) can contribute toward LEED EQ Credit 4.1 (Low Emitting Materials). - SMACNA PRESSURE AND SEAL CLASSES: Performs to SMACNA 0.5, 1, 2, 3, 4 and 6 up to 10 inch w.g. pressure classes and seal classes A, B and C, with results verified by the SMACNA Testing and Research Institute. Flame spread index under 25 and smoke developed index under 50 per UL 723. - CONFORMABLE FOR INDOOR AND OUTDOOR SEALING: The conformable foil backing works in tight spaces and fits round, square and odd-shaped objects. Ideal for sheet metal and flexible ducts on low, medium and high pressure HVAC systems, plus cracks and seams in gutters, sheet metal roofing and trailers. - SPECIFICATIONS: Backing 2 mil printed aluminum foil. Adhesive butyl rubber. Liner blue LDPE film. Total thickness 17 mils. Adhesion to steel 90 oz/in. Adhesion to backing 40 oz/in. Tensile strength 23 lb/in. Service temperature 40 to 200 degrees F. Flame spread under 25, smoke under 50. 3 inch core. Shelf life 36 months. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B079ZCJ8KC | | Adhesive Format | Rubber | | Adhesive Location | One-sided | | Adhesive Material | Butyl Rubber | | Adhesive Side Count | 1 | | Best Sellers Rank | #75,675 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #114 in Butyl Tape | | Brand Name | Nashua | | Color | Silver | | Compatible Material | Metal, Rubber | | Customer Reviews | 4.7 4.7 out of 5 stars (50) | | Foil Thickness | 2 mils | | Included Components | ** Please Note this listing is for 1 roll only** | | Item Dimensions L x W x Thickness | 1200"L x 2.83"W x 0.02"Th | | Item Resistance | moisture_resistant, solvent_resistant | | Item Thickness | 0.43 millimeters | | Item Weight | 3.3 pounds | | Manufacturer | Nashua | | Material Type | 2 mil aluminum foil - printed | | Model | 1086865 | | Number of Items | 1 | | Number of Packs | 1 | | Other Special Features of the Product | Printed | | Part Number | 1086865 | | Size Name | 3 in. x 100 ft. (72mm x 30.5m) | | Surface Recommendation | Glass | | Tensile Strength | 23 pounds_per_inch | | UPC | 742366010155 | | Unit Count | 30.48 meter | | Upper Temperature Rating | 200 °F | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** Nashua - **Color:** Silver - **Material:** 2 mil aluminum foil - printed - **Number of Items:** 1 - **Special Feature:** Printed ## Images ![Nashua FoilMastic Butyl Rubber Sealant Tape, 3 in. (72mm Actual) x 100 ft. (Silver) - Image 1](https://m.media-amazon.com/images/I/81ABd2Mxn1L.jpg) ![Nashua FoilMastic Butyl Rubber Sealant Tape, 3 in. (72mm Actual) x 100 ft. (Silver) - Image 2](https://m.media-amazon.com/images/I/41L0MM9em3L.jpg) ![Nashua FoilMastic Butyl Rubber Sealant Tape, 3 in. (72mm Actual) x 100 ft. (Silver) - Image 3](https://m.media-amazon.com/images/I/31mcPoj6EYL.jpg) ![Nashua FoilMastic Butyl Rubber Sealant Tape, 3 in. (72mm Actual) x 100 ft. (Silver) - Image 4](https://m.media-amazon.com/images/I/411i-hgrAxL.jpg) ![Nashua FoilMastic Butyl Rubber Sealant Tape, 3 in. (72mm Actual) x 100 ft. (Silver) - Image 5](https://m.media-amazon.com/images/I/414Q0bvEVbL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/82288591-nashua-foilmastic-butyl-rubber-sealant-tape-3-in-72mm-actual](https://www.desertcart.tn/products/82288591-nashua-foilmastic-butyl-rubber-sealant-tape-3-in-72mm-actual) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-10-18*